Electric fuse



W. B. LA POINTE.

ELECTRIC FUSE.

APPLICATION mu) AUG-12. 1919.

' Patented Nov. 29, 1921.

. 7// 7//7/ ////////////////////////A//A w r 1 llllllll I ammtoz 40 WilliamHLaPointe A; Mme-go UNITED STATES PATENT OFFICE.

WILLIAM 13. LA romrn, or COLUMBUS, OHIO, ASSIGNOR TO HERMAN E. VANCE, or POWELL, 01110.

ELECTRIC FUSE.

Specification of Letters Patent.

Patented Nov. 29, 1921.

Application filed August 12, 1919. Serial No. 317,088.

T 0 all whom it may concern:

Be it known that I, TVILLIAM B. LA POINTE, a citizen of the United States, residing at Columbus, in the county of Franklin and State of Ohio, have invented a certain new and useful Improvement in Electric F uses, of which the following is a specification.

The object of this invention is to provide an economically constructed fuse or cartridge for electric circuits which may be easily assembled and taken apart for the renewal of the fuse.

The invention is embodied in the example herein shown and described, the features of novelty being finally claimed.

In the accompanying drawings- Figure 1 is a View of one side of the fuse with the upper portion broken out to show the interior details.

Fig. 2 is a similar view looking at the device turned around ninety degrees from the position shown in Fig. l with the upper portion broken out to show interior details.

Fig. 3 is a plan View of either end of the device.

In the views 5 designates the case or shell of the cartridge, said shell being of common cylindrical form and of insulating material. 6 designates the fusing member which is secured at each of its ends by means of a screw 7 and washer 7* as shown in Fig. 2 to the terminal pieces 8. The terminal pieces 8 externally of the shell are in the form of knife blades, so called, and ha e their inner ends bent to form brackets 8 integral with the blades to receive fastening screws 9 connecting the pieces to the case. The brackets are bent so as to locate the fastening points of the fuse near the axis of the shell.

10 designates the caps to close the ends of the shell. These caps are each formed with a slot l0 for the passage of the terminal piece and with additional perforations 10 for ventilation. The caps are each secured upon the shell by the same screw 9 that secures the terminal to the shell.

The forms of the parts can be changed without departing from the gist of the invention as claimed.

What I claim is:

A safety fuse comprising, in combination, a shell, a fusible member and, terminals, each terminal consisting of an integral strip of metal of U-form at one end, one leg of said end secured to the shell and the other leg receiving the fusible member and extending externally of the shell and constituting a knife blade.

WILLIAM B. LA POIN TE. 

